History is written by the victors - What if Satan was trying to overthrow an evil tyrant, who defeated him and convinced the world Satan was the evil one?
It’s not even a what if. If you read the bible, you will see that’s pretty much what happened. God was an asshole who didn’t want humanity to have free will. He set up a situation where he knew they would fail just so he could torment them. He killed millions of innocent people when he rage quit with the flood and humanity only exists so he could fuck with them.